Patents Assigned to Daewoo Engineering & Construction Co., LTD
  • Patent number: 11313099
    Abstract: The present disclosure relates to: a flexible joint connecting device used for sequentially coupling precast concrete segments so as to construct an underwater tunnel; an underwater tunnel construction method using the flexible joint connecting device so as to join, in a watertight manner, tunnel modules and integrally connect same, thereby constructing the underwater tunnel; and the underwater tunnel constructed by the construction method.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: April 26, 2022
    Assignee: DAEWOO ENGINEERING & CONSTRUCTION CO., LTD
    Inventors: Byeong Moo Jin, Je Chun Kim, Kyoungo Kim, Kyung Tae Bae, Kyoungwon Seo, Youseok Kim, Yong Jic Kim, Hyun Su Park
  • Patent number: 10351790
    Abstract: The present invention provides an apparatus for molding gas hydrate pellets that includes: a pulverizer in which dehydrated gas hydrates are pulverized; a cooler having a rotating shaft provided therein, comprising a plurality of agitation blades installed along a height direction of the rotating shaft and configured to cool the gas hydrates to a predetermined temperature; a decompressor configured to decompress the cooled gas hydrates to a predetermined pressure; and a pellet molder configured to mold the decompressed gas hydrates to pellets.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: July 16, 2019
    Assignees: Dongguk University Industry-Academic Cooperation Foundation, Dongshin Hydraulics Co., Ltd., Korea Gas Corporation, Sungil Turbine Co., Ltd., Daewoo Engineering & Construction Co., Ltd.
    Inventors: Myung Ho Song, Yong Seok Yoon, In Kee Jung, Jung Wook Kim, Seung Hee An, Sang Yup Jang, Jae Won Lee, Sang M. Kim, Jin Seop Yang, Ta-Kwan Woo
  • Patent number: 10179884
    Abstract: Disclosed are a device and a method for manufacturing a natural gas hydrate. Provided is the device for manufacturing a natural gas hydrate comprising: an ice slurry generation unit for preparing ice slurry having 13-20% of ice at normal pressure; a first pipe, having one end connected to the ice slurry generation unit for withdrawing the ice slurry from the ice slurry generation unit, and in which a high-pressure pump for increasing pressure on the ice slurry is interposed; a hydrate preparation reactor, which is connected to the other end of the first pipe so as to receive the pressurized ice slurry, and to which natural gas is supplied and mixed, for generating natural gas hydrate slurry; a second pipe, having one end connected to the hydrate preparation reactor, for withdrawing the natural gas hydrate slurry; and a dehydrating portion, which is connected to the other end of the second pipe, for dehydrating the natural gas hydrate slurry.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: January 15, 2019
    Assignees: Daewoo Engineering & Construction Co., Ltd., Samsung Heavy Ind. Co., Ltd., Sung-Il Turbine Co., Ltd., Dongguk University Industry-Academic Cooperation Foundation
    Inventors: Myung Ho Song, Yong Seok Yoon, Hye Jung Hong, Jung Huyk Ahn, Mun Keun Ha, Seok Ku Jeon, Hoon Ahn, Ta Kwan Woo
  • Patent number: 10023821
    Abstract: The present invention relates to an apparatus comprising a reactor body to which gas and water are supplied to create a gas hydrate; an upper cover which is engaged to an upper portion of the reactor body, a scraper mounted rotationally within the reactor body, and a motor for providing a driving force to the scraper. It is possible to remove gas hydrate particles attached to at least one of an inner surface of the reactor body and an inner surface of the upper cover, by a rotary driving of the scraper. According to the invention, it is possible to prevent a material hindering a heat transfer by attaching on a wall surface of the reactor, through a process of scraping out gas hydrate particles, when the scraper which is rotationally driven about a center axis of the reactor is close to the inner surface of the reactor.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: July 17, 2018
    Assignees: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, KOREA GAS CORPORATION, DAEWOO ENGINEERING & CONSTRUCTION CO., LTD., STX OFFSHORE & SHIPBUILDING CO., LTD., SUNGILTURBINE CO., LTD., DONGSHIN HYDRAULICS CO., LTD.
    Inventors: Ju Dong Lee, Kyung Chan Kang, Sang Yeon Hong, Jae Il Lim, Sang Yup Jang, Seung Beom Hong, Ho Kyeong Kim, Ta Kwan Woo, Sang Min Kim
  • Patent number: 9839887
    Abstract: The present invention provides an apparatus for storing gas hydrate pellets that includes: a storage tank having an inlet formed at a top portion thereof for having gas hydrate pellets injected therein; a transfer part formed at a lower portion of the storage tank so as to transfer the injected gas hydrate pellets to an outside of the storage tank; a rotating shaft vertically formed in the storage tank; a plurality of division plates coupled to the rotating shaft to partition an internal space of the storage tank, each having a bottom portion thereof formed above a top portion of the transfer part; an extension plate coupled to a lower portion of each of the division plates in such a way that the extension plate is movable up and down; and a guide formed at an upper portion of the transfer part and configured to guide the extension plate so as to allow the extension plate to be revolved by rotation of the rotating shaft without an interruption with the transfer part.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: December 12, 2017
    Assignees: Dongshin Hydraulics Co., Ltd., Korea Gas Corporation, Sungilturbine Co., Ltd., Daewoo Engineering & Construction Co., Ltd., Stx Offshore & Shipbuilding Co., Ltd.
    Inventors: Myung Ho Song, Jung Woong Eun, Byoung Seok Lim, Seung Hee An, Sang Yup Jang, Jae Won Lee, Sang Min Kim, Jin Seop Yang, Ta Kwan Woo
  • Patent number: 9744508
    Abstract: The present invention provides an apparatus for regasifying gas hydrate pellets that includes: a cylinder; a piston coupled to an inside of the cylinder and configured to reciprocate up and down; a pellet providing part coupled to an one side of the cylinder in such a way that supply of gas hydrate pellets to the cylinder is adjusted by having one end thereof opened and closed by reciprocation of the piston; a pressure adjusting space having one end thereof coupled to a lower portion of the cylinder; a door formed in the pressure adjusting space and configured to define the pressure adjusting space; a transfer part having one end thereof coupled to the other end of the pressure adjusting space and configured to transfer the gas hydrate pellets; and a regasification part coupled to the other end of the transfer part and having heating water therein to allow regasification of the transferred gas hydrate pellets.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: August 29, 2017
    Assignees: Dongshin Hydraulics Co., Ltd., Korea Gas Corporation, Sungilturbine Co., Ltd., Daewoo Engineering & Construction Co., Ltd., STX Offshore & Shipbuilding Co., Ltd.
    Inventors: Myung Ho Song, Yong Seok Yoon, In Kee Jung, Jung Wook Kim, Seung Hee An, Sang Yup Jang, Jae Won Lee, Sang Min Kim, Jin Seop Yang, Ta Kwan Woo
  • Patent number: 9308507
    Abstract: Disclosed is a device for revaporizing natural gas. Provided is a device for revaporizing natural gas hydrate pellets, comprising: a pellet charging portion for charging pellets which is formed with an upper valve and a lower valve so as to divide space for adjusting pressure; a storing portion, which communicates with the lower portion of the pellet charging portion, for receiving pellets when the lower valve is opened; a transfer screw, one end of which couples to the lower portion of the storing portion, for transferring the pellets in the storing portion; and a dissolving reaction tub, which is coupled to the other end of the transfer screw, receives pellets from the lower portion of the dissolving reaction tub, and which accommodates heating water.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: April 12, 2016
    Assignees: Dongguk University Industry-Academic Cooperation Foundation, Samsung Heavy Ind. Co., Ltd., Hyundai Engineering Co., Ltd., Sung-Il Turbine Co., Ltd., Daewoo Engineering & Construction Co., Ltd.
    Inventors: Myung Ho Song, Yong Seok Yoon, Hye Jung Hong, Jung Huyk Ahn, Mun Keun Ha, Seok Ku Jeon, Hoon Ahn, Ta Kwan Woo
  • Patent number: 9302239
    Abstract: According to an embodiment of the present invention, a gas-liquid circulating type gas hydrate reactor, includes: a reactor body configured to be supplied with gas and water to generate a gas hydrate; and a bubble generator configured to be disposed around a lower portion of the reactor body, wherein the gas supplied from the lower portion of the reactor body is jetted into the reactor body through the bubble generator. The gas-liquid circulating type gas hydrate reactor in accordance with the present invention makes it possible to jet gas at a high speed by using the bubble generator disposed at the low portion of the reactor body so as to promote the reaction of water and gas which are accommodated in the reactor body while forming a water stream at the lower portion of the reactor body that enables a smooth agitation of the water and the gas.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: April 5, 2016
    Assignees: Korea Institute Of Industrial Technology, Korea Gas Corporation, Daewoo Engineering & Construction Co., Ltd., STX Offshore & Shipbuilding Co., Ltd., Sungilturbine Co., Ltd., Dongshin Hydraulics Co., Ltd.
    Inventors: Joung Ha Kim, Ju Dong Lee, Jae Ho Yun, Ho Kyeong Kim, Sang Min Kim, Seung Beom Hong, Ta Kwan Woo, Seung Hee An
  • Patent number: 9255234
    Abstract: Disclosed are a device and a method for manufacturing a natural gas hydrate. Provided is the device for manufacturing a natural gas hydrate comprising: an ice slurry generation unit for preparing ice slurry having 13-20% of ice at normal pressure; a first pipe, having one end connected to the ice slurry generation unit for withdrawing the ice slurry from the ice slurry generation unit, and in which a high-pressure pump for increasing pressure on the ice slurry is interposed; a hydrate preparation reactor, which is connected to the other end of the first pipe so as to receive the pressurized ice slurry, and to which natural gas is supplied and mixed, for generating natural gas hydrate slurry; a second pipe, having one end connected to the hydrate preparation reactor, for withdrawing the natural gas hydrate slurry; and a dehydrating portion, which is connected to the other end of the second pipe, for dehydrating the natural gas hydrate slurry.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: February 9, 2016
    Assignees: Dongguk University Industry-Academic Cooperation Foundation, Sung-II Turbine Co., Ltd., Samsung Heavy Ind. Co., Ltd., Daewoo Engineering & Construction Co., Ltd., Hyundai Engineering Co., Ltd.
    Inventors: Myung Ho Song, Yong Seok Yoon, Hye Jung Hong, Jung Huyk Ahn, Mun Keun Ha, Seok Ku Jeon, Hoon Ahn, Ta Kwan Woo
  • Publication number: 20140348720
    Abstract: According to an embodiment of the present invention, a gas-liquid circulating type gas hydrate reactor, includes: a reactor body configured to be supplied with gas and water to generate a gas hydrate; and a bubble generator configured to be disposed around a lower portion of the reactor body, wherein the gas supplied from the lower portion of the reactor body is jetted into the reactor body through the bubble generator. The gas-liquid circulating type gas hydrate reactor in accordance with the present invention makes it possible to jet gas at a high speed by using the bubble generator disposed at the low portion of the reactor body so as to promote the reaction of water and gas which are accommodated in the reactor body while forming a water stream at the lower portion of the reactor body that enables a smooth agitation of the water and the gas.
    Type: Application
    Filed: September 18, 2012
    Publication date: November 27, 2014
    Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, KOREA GAS CORPORATION, DONGSHIN HYDRAULICS CO., LTD., STX OFFSHORE & SHIPBUILDING CO., LTD., SUNGILTURBINE CO., LTD., DAEWOO ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Joung Ha Kim, Ju Dong Lee, Jae Ho Yun, Ho Kyeong Kim, Sang Min Kim, Seung Beom Hong, Ta Kwan Woo, Seung Hee An
  • Publication number: 20140330055
    Abstract: The present invention relates to an apparatus comprising a reactor body to which gas and water are supplied to create a gas hydrate; an upper cover which is engaged to an upper portion of the reactor body, a scraper mounted rotationally within the reactor body, and a motor for providing a driving force to the scraper. It is possible to remove gas hydrate particles attached to at least one of an inner surface of the reactor body and an inner surface of the upper cover, by a rotary driving of the scraper. According to the invention, it is possible to prevent a material hindering a heat transfer by attaching on a wall surface of the reactor, through a process of scraping out gas hydrate particles, when the scraper which is rotationally driven about a center axis of the reactor is close to the inner surface of the reactor.
    Type: Application
    Filed: September 19, 2012
    Publication date: November 6, 2014
    Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, KOREA GAS CORPORATION, DONGSHIN HYDRAULICS CO., LTD., STX OFFSHORE & SHIPBUILDING CO., LTD., SUNGILTURBINE CO., LTD., DAEWOO ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Ju Dong Lee, Kyung Chan Kang, Sang Yeon Hong, Jae Il Lim, Sang Yup Jang, Seung Beom Hong, Kyeong Ho Kim, Kwan Ta Woo, Sang Min Kim
  • Patent number: 8486340
    Abstract: Disclosed herein is an apparatus for continuously producing and pelletizing gas hydrates. The apparatus includes a gas supply unit, a water supply unit and a reactor. Gas and water are respectively supplied from the gas supply unit and the water supply unit into the reactor. The gas and water react with each other in the reactor. The reactor includes a dual cylinder unit which forms a gas hydrate in such a way as to squeeze a slurry of reaction water formed by the reaction between the gas and water. The dual cylinder unit includes an upper cylinder, a lower cylinder and a connection pipe which connects the upper cylinder to the lower cylinder. The connection pipe has passing holes through which the reaction water in the reactor flows into and out of the connection pipe.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: July 16, 2013
    Assignees: Korea Institute of Industrial Technology, Samsung Heavy Industries Co., Ltd., Hyundai Engineering Co., Ltd., Daewoo Engineering & Construction Co., Ltd., Sungilturbine Co., Ltd.
    Inventors: Ju Dong Lee, Hyoung Jae Kim, Sung Ryul Kim, Sang Yeon Hong, Hye Ok Park, Mun Keun Ha, Seok Ku Jeon, Hoon Ahn, Ta Kwan Woo
  • Patent number: 8180588
    Abstract: The present invention relates to a compensation method for structural deformation occurring during construction of a super tall building, which includes the steps of: selecting horizontal and vertical members predicted to require compensation for horizontal and vertical deformation amounts; calculating deformation amounts based on the casting time of structural concrete for the selected horizontal or vertical members; determining compensation amounts based on the casting time of structural concrete for the selected horizontal or vertical members; calculating deformation amounts of the selected horizontal or vertical members up to and subsequent to the non-structural construction processes; determining compensation amounts by process of the selected horizontal or vertical members; and constructing the selected horizontal or vertical members by floors.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 15, 2012
    Assignee: Daewoo Engineering & Construction Co., Ltd.
    Inventors: Taehun Ha, Sungho Lee, Bohwan Oh
  • Publication number: 20110263913
    Abstract: Disclosed herein is an apparatus and method for continuously producing and dehydrating gas hydrates. The apparatus includes a gas source, a water source, a reactor, a spinning wheel, and a centrifugal separator. The gas source and the water source are connected to the reactor. Gas and water are respectively supplied from the gas source and the water source into the reactor and react with each other in the reactor to form gas hydrate slurry. The spinning wheel and the centrifugal separator are provided in the reactor. The spinning wheel supplies the formed gas hydrate slurry to the centrifugal separator. The centrifugal separator dehydrates the gas hydrate slurry. Water removed from the gas hydrate slurry by the dehydration of the centrifugal separator is re-supplied into the reactor.
    Type: Application
    Filed: May 24, 2010
    Publication date: October 27, 2011
    Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, SAMSUNG HEAVY INDUSTRIES CO., LTD., SUNG IL CO., LTD. (SIM), DAEWOO ENGINEERING & CONSTRUCTION CO., LTD., HYUNDAI ENGINEERING CO., LTD.
    Inventors: Ju Dong Lee, Jin Woo Lee, Kyung Chan Kang, Kyeong Nam Park, Mun Keun Ha, Seok Ku Jeon, Hoon Ahn, Ta Kwan Woo
  • Publication number: 20110064643
    Abstract: Disclosed herein is an apparatus for continuously producing and pelletizing gas hydrates. The apparatus includes a gas supply unit, a water supply unit and a reactor. Gas and water are respectively supplied from the gas supply unit and the water supply unit into the reactor. The gas and water react with each other in the reactor. The reactor includes a dual cylinder unit which forms a gas hydrate in such a way as to squeeze a slurry of reaction water formed by the reaction between the gas and water. The dual cylinder unit includes an upper cylinder, a lower cylinder and a connection pipe which connects the upper cylinder to the lower cylinder. The connection pipe has passing holes through which the reaction water in the reactor flows into and out of the connection pipe.
    Type: Application
    Filed: May 10, 2010
    Publication date: March 17, 2011
    Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, SAMSUNG HEAVY INDUSTRIES CO., LTD., HYUNDAI ENGINEERING CO., LTD., DAEWOO ENGINEERING & CONSTRUCTION CO., LTD., SUNG IL CO., LTD (SIM)
    Inventors: Ju Dong LEE, Hyoung Jae Kim, Sung Ryul Kim, Sang Yeon Hong, Hye Ok Park, Mun Keun Ha, Seok Ku Jeon, Hoon Ahn, Ta Kwan Woo
  • Publication number: 20100310318
    Abstract: A positioning apparatus includes a frame and two substantially vertically extending legs. The frame includes a suspension device adapted to suspend a sinking tunnel section. The legs include upper ends connected by a substantially horizontally extending beam and lower ends vertically movable relative to the sinking tunnel section. The legs include clamping members for engaging opposite transverse sides of the tunnel section that are settable substantially in a plane defined by the legs and beam of the frame. The frame is devised for extending with its legs outwardly of the two opposite transverse sides of the tunnel section and extending with the beam above a roof of the tunnel section.
    Type: Application
    Filed: December 20, 2007
    Publication date: December 9, 2010
    Applicants: STRUKTON CIVIEL PROJECTEN B.V., DAEWOO ENGINEERING & CONSTRUCTION CO., LTD.
    Inventor: Gerrit Martinus Hertgers
  • Patent number: 7604733
    Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: October 20, 2009
    Assignees: Korea Institute of Construction Technology, Daewoo Engineering & Construction Co., Ltd.
    Inventors: Kwang-Soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee
  • Publication number: 20090173679
    Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.
    Type: Application
    Filed: March 16, 2009
    Publication date: July 9, 2009
    Applicants: KOREA INSTITUTE OF CONTRUCTION TECHNOLOGY, DAEWOO ENGINEERING & CONSTRUCTION CO., LTD.
    Inventors: Kwang-soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee
  • Patent number: 7546656
    Abstract: A method of installing segmental concrete filled tube members. The prefabricated segmental concrete filled tube member has a hollow pipe filled therein with concrete, and a connection flange shaped in a ring radially extending from the peripheries of both ends of the pipe, wherein the segmental concrete filled tube member is integrally connected with another adjacent segmental concrete filled tube member by the connection flange.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: June 16, 2009
    Assignee: Daewoo Engineering & Construction Co., Ltd
    Inventors: Seong-woon Kim, Young-jin Kim, In-gyu Kim, Byeong-moo Jin, Tae-hoon Kim, Hyang-wook Ma, Yun-seok Lee
  • Patent number: 7520991
    Abstract: A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: April 21, 2009
    Assignees: Korea Institute of Construction Technology, Daewoo Engineering & Construction Co., Ltd.
    Inventors: Kwang-Soo Kim, Hee-Ja Lee, I-Tae Kim, Kwang-Ho Ahn, Chai-Sung Gee, Sung-Youn Kim, Ji-Seon Yoo, Eui-Sin Lee, Sung-Pok Paik, Chul-Ki Oh, Kwang-Yoon Lee